Red Hood and the Exiles. Book 1. Dark Trinity. Who is Artemis?

Jason Todd was Robin until he died. Now he is Red Hood – the leader of Gotham's criminal world and a newcomer to the organization of the mysterious crime lord Black Mask. Of course, it's just a cover: Jason uses his bad boy reputation to infiltrate Black Mask's gang and destroy it from within... if Batman doesn't intervene again.
When the boss orders Red Hood to steal a top-secret biological weapon, he learns that the Amazon warrior Artemis is also interested in the mysterious cargo. There's no avoiding a fight, but Hood is puzzled: what kind of weapon has such high demand?..